Final answer:
Esther's lung cancer treatment is likely to involve surgical removal of the tumor, with the potential addition of radiation therapy or chemotherapy to prolong survival or alleviate symptoms.
Step-by-step explanation:
The likely treatment for Esther's condition, given that only a small lateral portion of her right lung is affected by tumors, would probably involve surgical removal of the tumor. Since the cancer is localized, surgery could potentially cure it or at least prolong Esther's survival. If the situation is deemed suitable, other treatments such as radiation therapy or chemotherapy could also be considered, either alone or in combination with surgery. Radiation therapy might be used to alleviate symptoms and prolong life, though lung tissue's sensitivity to radiation might limit its effectiveness as a curative measure. Chemotherapy, through the use of drugs like cisplatin which has been known to cure metastasized cancers in some cases, could also be an option to destroy cancer cells that may not be physically removable.